Systematic review with meta‐analysis: association between Helicobacter pylori CagA seropositivity and odds of inflammatory bowel disease

Summary Background Accumulating data support a protective role of Helicobacter pylori against inflammatory bowel diseases (IBD), which might be mediated by strain‐specific constituents, specifically cagA expression. Aim To perform a systematic review and meta‐analysis to more clearly define the association between CagA seropositivity and IBD. Methods We identified comparative studies that included sufficient detail to determine the odds or risk...